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https://www.readbyqxmd.com/read/29352681/no-consensus-for-femoral-head-impaction-technique-in-surgeon-education-materials-from-orthopedic-implant-manufacturers
#1
Brian J McGrory, Eric Ng
BACKGROUND: Prior studies indicate that one factor that may contribute to total hip arthroplasty failure due to mechanically assisted crevice corrosion at the femoral head-trunnion junction is the method of femoral head fixation. METHODS: Up-to-date on-line surgical technique guides describing fixation of the prosthetic femoral head of common implants of the 4 largest manufacturers as well as 2 minor manufacturers were identified. The information given regarding preparation and fixation of the femoral head was evaluated and compared...
December 30, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29352411/the-impact-of-using-an-upper-limb-prosthesis-on-the-perception-of-real-and-illusory-weight-differences
#2
Gavin Buckingham, Johnny Parr, Greg Wood, Samuel Vine, Pan Dimitriou, Sarah Day
Little is known about how human perception is affected using an upper-limb prosthesis. To shed light on this topic, we investigated how using an upper-limb prosthesis affects individuals' experience of object weight. First, we examined how a group of upper-limb amputee prosthetic users experienced real mass differences and illusory weight differences in the context of the 'size-weight' illusion. Surprisingly, the upper-limb prosthetic users reported a markedly smaller illusion than controls, despite equivalent perceptions of a real mass difference...
January 19, 2018: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/29351615/18f-fluorodeoxyglucose-positron-emission-computed-tomography-and-computed-tomography-angiography-in-prosthetic-heart-valve-endocarditis-from-guidelines-to-clinical-practice
#3
Laurens E Swart, Asbjørn M Scholtens, Wilco Tanis, Koen Nieman, Ad J J C Bogers, Fred J Verzijlbergen, Gabriel P Krestin, Jolien W Roos-Hesselink, Ricardo P J Budde
The timely diagnosis of prosthetic heart valve endocarditis remains challenging yet of utmost importance. 18F-fluorodeoxyglucose (18 F-FDG) positron emission/computed tomography (PET/CT) and cardiac computed tomography angiography (CTA) were recently introduced as additional diagnostic tools in the most recent ESC guidelines on infective endocarditis. However, how to interpret PET/CT findings with regard to what is to be considered abnormal, what the potential confounders may be, as well as which patients benefit most from these additional imaging techniques and how to best perform them in these often-complex patients, remains unclear...
January 16, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29351504/a-systematic-literature-review-of-physiotherapy-and-rehabilitation-approaches-to-lower-limb-amputation
#4
Özlem Ülger, Tezel Yıldırım Şahan, Seher Erol Çelik
BACKGROUND: Successful use of prostheses after lower-limb amputation (LLA) depends on undergoing physiotherapy and rehabilitation both physically and psychologically. The aim of this systematic literature review is to systematically review the scientific evidence regarding prosthetic rehabilitation and physiotherapy after LLA. METHODS: A systematic literature search was conducted using PubMed, Web of Science, Cochrane, CINAHL, EMBASE, SCOPUS, and EMB Reviews databases on December 31, 2015...
January 19, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29350089/a-comparative-analysis-of-internal-bone-remodelling-concepts-in-a-novel-implant-for-direct-skeletal-attachment-of-limb-prosthesis-evaluation-a-finite-element-analysis
#5
Piotr Prochor, Eugeniusz Sajewicz
Nowadays, numerous internal bone remodelling concepts are under development, in order to estimate long-term functionality of implants by evaluating the intensity of stress-shielding effect. This effect is also analysed for the implants for direct skeletal attachment, considered as a better exoprosthesis fixation method than prosthetic sockets. Most of bone remodelling approaches are based on basic concepts, differing with certain assumptions, which may affect the accuracy of the results. This article compares commonly used internal bone remodelling concepts and evaluates the functionality of the proposed Limb Prosthesis Osseointegrated Fixation System for direct skeletal attachment of limb prosthesis in comparison with two currently available implants: the Intraosseous Transcutaneous Amputation Prosthesis and the Osseointegrated Prostheses for the Rehabilitation of Amputees...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29349662/roles-and-maturation-of-iron-sulfur-proteins-in-plastids
#6
REVIEW
Jonathan Przybyla-Toscano, Mélanie Roland, Frédéric Gaymard, Jérémy Couturier, Nicolas Rouhier
One reason why iron is an essential element for most organisms is its presence in prosthetic groups such as hemes or iron-sulfur (Fe-S) clusters, which are notably required for electron transfer reactions. As an organelle with an intense metabolism in plants, chloroplast relies on many Fe-S proteins. This includes those present in the electron transfer chain which will be, in fact, essential for most other metabolic processes occurring in chloroplasts, e.g., carbon fixation, nitrogen and sulfur assimilation, pigment, amino acid, and vitamin biosynthetic pathways to cite only a few examples...
January 18, 2018: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/29349615/long-term-follow-up-at-5%C3%A2-years-of-midline-incisional-hernia-repairs-using-a-primary-closure-and-prosthetic-onlay-technique-recurrence-and-quality-of-life
#7
M Juvany, C Hoyuela, F Carvajal, M Trias, A Martrat, J Ardid
INTRODUCTION AND OBJECTIVES: The recurrence rate of incisional hernia (IH) repair is usually underestimated due to a lack of long-term follow-up. The objective of this study was to evaluate recurrence rate for patients operated on midline IH surgery, using a primary closure and prosthetic onlay technique, 5 years after the procedure. MATERIALS AND METHODS: From January 2009 to January 2011, all 92 patients operated on elective midline IH repair by primary closure and prosthetic onlay technique in a General Surgery Department were retrospectively included in the study...
January 18, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29348010/early-outcomes-with-the-evolut-pro-repositionable-self-expanding-transcatheter-aortic-valve-with-pericardial-wrap
#8
John K Forrest, Abeel A Mangi, Jeffrey J Popma, Kamal Khabbaz, Michael J Reardon, Neal S Kleiman, Steven J Yakubov, Daniel Watson, Susheel Kodali, Isaac George, Peter Tadros, George L Zorn, John Brown, Robert Kipperman, Sara Saul, Hongyan Qiao, Jae K Oh, Mathew R Williams
OBJECTIVES: This study sought to evaluate the Medtronic Evolut PRO Transcatheter Aortic Valve System in patients with severe symptomatic aortic stenosis. BACKGROUND: A next-generation self-expanding transcatheter aortic valve was designed with an external pericardial wrap with the intent to reduce paravalvular leak while maintaining the benefits of a low-profile, self-expanding, and repositionable supra-annular valve. METHODS: The Medtronic Evolut PRO Clinical Study included 60 patients undergoing transcatheter aortic valve replacement with the Evolut PRO valve at 8 investigational sites in the United States...
January 22, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29348008/impact-of-pre-existing-prosthesis-patient-mismatch-on-survival-following-aortic%C3%A2-valve-in-valve%C3%A2-procedures
#9
Philippe Pibarot, Matheus Simonato, Marco Barbanti, Axel Linke, Ran Kornowski, Tanja Rudolph, Mark Spence, Neil Moat, Gabriel Aldea, Marco Mennuni, Alessandro Iadanza, Hafid Amrane, Diego Gaia, Won-Keun Kim, Massimo Napodano, Hardy Baumbach, Ariel Finkelstein, Junjiro Kobayashi, Stephen Brecker, Creighton Don, Alfredo Cerillo, Axel Unbehaun, David Attias, Mohammed Nejjari, Noah Jones, Claudia Fiorina, Didier Tchetche, Raphael Philippart, Konstantinos Spargias, Jose-Maria Hernandez, Azeem Latib, Danny Dvir
OBJECTIVES: The aim of this study was to determine whether the association of small label size of the surgical valve with increased mortality after transcatheter valve-in-valve (ViV) implantation is, at least in part, related to pre-existing prosthesis-patient mismatch (PPM) (i.e., a bioprosthesis that is too small in relation to body size). BACKGROUND: Transcatheter ViV implantation is an alternative for the treatment of patients with degenerated bioprostheses...
January 22, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29346020/sequential-ridge-augmentation-sra-protocol-for-hard-and-soft-tissue-grafting-in-alveolar-ridge-deficiencies-a-proposed-algorithm
#10
Neel Bhatavadekar, Amit Srikant Gharpure
The success of implant-based treatment is dependent on the correct restorative position of dental implants in the oral cavity. Often, the final prostheses require dental implants to be placed at sites with inadequate native hard and soft tissue. Bone augmentation procedures and materials have been extensively studied in the literature and various techniques have been developed over time to obtain adequate hard tissue at proposed implant sites. In the recent past, few publications have also studied soft tissue development at planned implant sites...
January 18, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29343435/paracrine-wnt5a-%C3%AE-catenin-signaling-triggers-a-metabolic-program-that-drives-dendritic-cell-tolerization
#11
Fei Zhao, Christine Xiao, Kathy S Evans, Tbalamayooran Theivanthiran, Nicholas DeVito, Alisha Holtzhausen, Juan Liu, Xiaojing Liu, David Boczkowski, Smita Nair, Jason W Locasale, Brent A Hanks
Despite recent advances, many cancers remain refractory to available immunotherapeutic strategies. Emerging evidence indicates that the tolerization of local dendritic cells (DCs) within the tumor microenvironment promotes immune evasion. Here, we have described a mechanism by which melanomas establish a site of immune privilege via a paracrine Wnt5a-β-catenin-peroxisome proliferator-activated receptor-γ (PPAR-γ) signaling pathway that drives fatty acid oxidation (FAO) in DCs by upregulating the expression of the carnitine palmitoyltransferase-1A (CPT1A) fatty acid transporter...
January 16, 2018: Immunity
https://www.readbyqxmd.com/read/29342430/tissue-expander-stimulated-lengthening-of-arteries-for-the-treatment-of-midaortic-syndrome-in-children
#12
Heung Bae Kim, Gabriel J Ramos-Gonzalez, Khashayar Vakili, Deborah R Stein, Michael A Ferguson, Diego Porras, James E Lock, Gulraiz Chaudry, Ahmad Alomari, Steven J Fishman
BACKGROUND: Midaortic syndrome (MAS) is a rare condition characterized by stenosis of the abdominal aorta. Patients with disease refractory to medical management will usually require either endovascular therapy or surgery with use of prosthetic graft material for bypass or patch angioplasty. We report our early experience with a novel approach using a tissue expander (TE) to lengthen the normal native arteries in children with MAS, allowing primary aortic repair without the need for prosthetic graft material...
January 13, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29342217/how-do-the-outcomes-of-the-deka-arm-compare-to-conventional-prostheses
#13
Linda J Resnik, Matthew L Borgia, Frantzy Acluche, Jill M Cancio, Gail Latlief, Nicole Sasson
OBJECTIVES: Objectives were to 1) compare self-reported function, dexterity, activity performance, quality of life and community integration of the DEKA Arm to conventional prostheses; and 2) examine differences in outcomes by conventional prosthesis type, terminal device type and by DEKA Arm configuration level. METHODS: This was a two-part study; Part A consisted of in-laboratory training. Part B consisted of home use. Study participants were 23 prosthesis users (mean age = 45 ± 16; 87% male) who completed Part A, and 15 (mean age = 45 ± 18; 87% male) who completed Parts A and B...
2018: PloS One
https://www.readbyqxmd.com/read/29340344/biomechanical-comparison-of-different-implant-inclinations-and-cantilever-lengths-in-all-on-4-treatment-concept-by-three-dimensional-finite-element-analysis
#14
Oguz Ozan, Sevcan Kurtulmus-Yilmaz
PURPOSE: The aim of this study was to evaluate the effect of implant inclination and cantilever length on the stress distribution in mandibular cortical bone, implant, abutment, prosthetic framework, and prosthetic screw via three-dimensional (3D) finite element analysis (FEA). MATERIALS AND METHODS: Four different finite element models (0-0, 17-17, 30-30, 45-30) were designed according to the tilting angle (0, 17, 30, and 45 degrees) of the posterior implant and angle of multiunit abutments (0, 17, and 30 degrees)...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29339793/skin-inspired-highly-stretchable-and-conformable-matrix-networks-for-multifunctional-sensing
#15
Qilin Hua, Junlu Sun, Haitao Liu, Rongrong Bao, Ruomeng Yu, Junyi Zhai, Caofeng Pan, Zhong Lin Wang
Mechanosensation electronics (or Electronic skin, e-skin) consists of mechanically flexible and stretchable sensor networks that can detect and quantify various stimuli to mimic the human somatosensory system, with the sensations of touch, heat/cold, and pain in skin through various sensory receptors and neural pathways. Here we present a skin-inspired highly stretchable and conformable matrix network (SCMN) that successfully expands the e-skin sensing functionality including but not limited to temperature, in-plane strain, humidity, light, magnetic field, pressure, and proximity...
January 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29339678/endarteritis-of-coarctation-of-the-aorta-diagnosed-with-pet-ct
#16
Ümit Yaşar Sinan, Burcu Dirlik Serim, Rukiye Yıldırım, Özge Çetinarslan, Mehmet Serdar Küçükoğlu
Infective endocarditis (IE) is an infectious disease that affects the endothelium of the large intrathoracic vessels, heart valves, and intra-cardiac foreign body material. A 20-year-old woman was admitted to the cardiology department with complaints of fever and palpitations. Transthoracic echocardiography revealed a bicuspid aortic valve, aortic root enlargement, and aortic coarctation. Transesophageal echocardiography revealed a bicuspid aortic valve, but there was no vegetation. Methicillin-sensitive Staphylococcus aureus was identified on a blood culture...
January 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29339298/implementation-and-impact-of-an-audit-and-feedback-antimicrobial-stewardship-intervention-in-the-orthopaedics-department-of-a-tertiary-care-hospital-a-controlled-interrupted-time-series-study
#17
Margarida Tavares, Ana Cláudia Carvalho, José Pedro Almeida, Paulo Andrade, Ricardo São Simão, Pedro Soares, Carlos Alves, Rui Pinto, Arnaud Fontanet, Laurence Watier
A prospective audit and feedback antimicrobial stewardship intervention conducted in the Orthopaedics Department of a University Hospital in Portugal was evaluated by comparing an interrupted time series in an intervention group and a non-intervention (control) group. Monthly antibiotic use (except cefazolin) was measured as World Health Organization- and Anatomical Therapeutic Chemical-defined daily doses (DDD) from January 2012 to September 2016, excluding the 6-month phase of intervention implementation starting on January 1, 2015...
January 12, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29339015/ambicor-2-piece-inflatable-penile-prosthesis-who-and-how
#18
George A Abdelsayed, Laurence A Levine
BACKGROUND: Currently the Ambicor is the only 2-piece inflatable penile prosthesis (IPP) available in the United States. By eliminating the separate reservoir, this provides certain advantages for patient and surgeon. Nevertheless, it composes a small percentage of all IPPs implanted in the United States. AIM: To detail the surgical technique for implantation, describe the ideal patient candidates best suited for the Ambicor, and discuss the most common and some rare complications with a review of the available published literature in combination with our clinical experience...
January 12, 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29338037/stentless-vs-stented-bioprosthesis-for-aortic-valve-replacement-a-case-matched-comparison-of-long-term-follow-up-and-subgroup-analysis-of-patients-with-native-valve-endocarditis
#19
Andreas Schaefer, Jannis Dickow, Gerhard Schoen, Sumi Westhofen, Lisa Kloss, Tarik Al-Saydali, Hermann Reichenspurner, Sebastian A Philipp, Christian Detter
BACKGROUND: Current retrospective evidence suggests similar clinical and superior hemodynamic outcomes of the Sorin Freedom Solo stentless aortic valve (SFS) (LivaNova PLC, London, UK) compared to the Carpentier Edwards Perimount stented aortic valve (CEP) (Edwards Lifesciences Inc., Irvine, California, USA). To date, no reports exist describing case-matched long-term outcomes and analysis for treatment of native valve endocarditis (NVE). METHODS: From 2004 through 2014, 77 consecutive patients (study group, 59...
2018: PloS One
https://www.readbyqxmd.com/read/29336620/the-role-of-the-pi3k-mtor-signaling-pathway-in-staphylococcus-epidermidis-small-colony-variants-intracellular-survival
#20
Agnieszka Magryś, Agnieszka Bogut, Michał Kiełbus, Alina Olender
The objective of this study was to analyze how Staphylococcus epidermidis SCV and WT strains manipulate the PI3K/Akt/mTOR signaling pathway. Six S. epidermidis strains with normal phenotype (WT) and six S. epidermidis strains with SCV phenotype were isolated in parallel from six patients with the prosthetic hip joint infections. THP-1 activated cells were incubated with or without PI3K inhibitor-wortmannin or with mTOR inhibitor-rapamycin. Next, macrophages were exposed to S. epidermidis WT and SCV strains...
January 16, 2018: Immunological Investigations
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